Air conditioner



W. L. MACK AIR CONDITIONER Filed June 2, 1932 N Q QYQQM Patented Dec.5,193

, UNITED STATES PATENT orrlca 6 Claims. 257-137) This invention relatesto room heating and air conditioning and has for its object to providean air conditioning device which can be installed in the wall of a roomso as to be accommodated l in a cavity formed in said wall. 1

More specifically, the invention contemplates the type of airconditioner in which the air to be conditioned is carried through theconditioner casing by means of a blower located in said casl ing, andpassed through a heat transfer element also mounted in said casing, andconsists in the arrangement of the various parts so as to secure aconditioner of relatively shallow depth which can be accommodated in acavity in a wall of a normal dwelling house, and yet which will functioneiliciently to condition air in the room.

Another object of the invention is to provide a conditioner which willsecure a maximum uniiormity in the condition of the air on which it 20operates.

plates a conditioner which withdraws air from the room belowapproximately a four foot level and returns it below-this level, in ahorizontally moving stream. It is my object to secure this result inaheater which can be installed in a wall as aforesaid.

with these and other objects in view my invention consists'in thecombination and con struction and arrangement of the various partsthereof, whereby the objects contemplated are attained, as more fullyset forth in the accompanying specifications, pointed out in my claims,and illustrated in the accompanying drawing, in which:

Fig. 1 is afront elevationof the conditioner, parts being broken away tobetter illustrate the construction.

Fig. 2 is a vertical transverse sectional view of the same.

The present application is a continuation in part ofmy applicationsSerial No. 400,018, filed October 16, 1929 issued December 13,1932, asPatent No. 1,890,521, and Serial No. 477,830, flied August 26, 1930.

I provide a heater casing having a base comprising'a bottom wall andangle iron legs 11, a rear wall 12, end walls '13, and a top wall 14.

A pair of angle iron rails 16 and 17 are secured at their ends by meansof screws to brackets 18 attached to the end walls 13. (See Fig. 2.) Totherear faces of the rails 16 and 17 is permanently secured an insulatorwall 19, forming together with said rails' 16 and 1'7, an integralinsulator wallunit. I 55 Between the brackets 18 and front and rear Tothis end, the invention contemthe former accommodating the blower unitD.

and the latter serving to allow for change in direction from thevertical to the horizontal in the air stream as it strikes the inclineddeflector wall 21.

Each of the compartments A, "B, C extend horizontally, one above theother, and occupy substantially the full depth of the casing from frontto rear.

The blower D is of the type including a motor 24, motor shaft 25, andcentrifugal fan rotors 26, mounted in fan casings 27, at opposite endsof the motor 24, and axially aligned therewith. Air enters through axialopenings 28 and leaves through top delivery openings 29, from whence itis delivered directly upwardly through the heat transfer element 22. t

The front panel 30 carries the'upper grille 31 and the lower grille 32is mounted for adjustment relative to the panel. Air enters theconditioner through the lower grille 32 and leaves 35 through the uppergrille 31.

In-relation to its shallow depth, this conditioner will handle a largevolume of air, and depends for conditioning eificiency on moderatelychanging the temperature of large quantities 99 of air, thencedischarging the conditioned air horizontally below the breathing line(below substantially a four foot level above the floor) The motor blowerunit is designed for normal operation at around 1200 R. P. M., and maybe provided with speed control mechanism (not shown) for varying itsrate from 900 to 1500 R. P. M. The velocity of the air through theoutlet will range from not less than substantially 125cubic feet of airper minute at 900 R. P. M. 100

lliifi 111 8. 37" uni bodied in the present invention being that ofrelatively low temperature change in the air handled, with relativelyhigh distribution of the air in relatively large quantities. Thetemperature change, i. e., the differential in temperature between anormal room temperature of and the outlet temperature of the air leavingthe heater, will range from approximately 72 at 1500 R. P. M. to aroundat 900 RP. M., the outlet temperaiure obviously being higher with aslower air By arranging a heating unit in a relatively shallow heatercasing, substantially filling the casing from front to rear and with itslongitudinal axis horizontal, passing air through said unit in largequantities, and thence discharging said air into a room in a horizontaldirection below a normal or average breathing plane, I secure not only avery efficient heat distribution, keeping the heated air down in theliving zone rather than allowing it to rise to the ceiling, anddistributing it in large quantities in a horizontal direction into saidliving zone, but also achieve a type of circulation which producescomfort at a somewhat lower temperature than. has been necessary in oldmethods.

Secured to the member 1'7 is a baffle plate 35 which extends the airpassage .A upwardly to such an extent that the air will rebound from thewalls 21 and 14 with a sufficiently downward inclination to overcome theeffects of. the buoyancy of the heated air. I have found'that withoutthis baille plate, and with the upper chamher "(2" the'full depth of thegrille 31,- unobstructed, the air will pass through the grille with anupward inclination, probably due to the expansion of the air stream inthe wider passage openingwhich would thus be formed as compared with theconstriction of the passage opening in the construction shown, and theoverhanging of the upper wall 14 beyond the upper edge of the baffleplate 35, insuring the proper depressing of the discharged stream.

The present invention comprises the arrangement of the various parts ofa heater to secure these results in a wall heater which can beaccommodated in a cavity in a wall of a normal dwelling house.

I claim as my invention:

1. In an air conditioner, an upright casing of sufficiently shallowdepth to be accommodated in a cavity in a wall of an ordinary dwellinghouse, said casing having a vertical air passagewaydefined betweenvertical walls of said casing disposed intermediate the top and bottomof the casing and occupying substantially all of the space from front torear of said casing, and having upper and lower horizontal compartmentsextending from end to end of the casing and dis posed respectively aboveand belowsaid passageway, a heat transfer element substantially fillingsaid passageway from front to rear thereof said element including acentral core and spaced vanes extending laterally therefrom in verticalplanes,

compartments to the other, the casing having intake and dischargeopenings communicating respectively with said compartments, and a blowercomprising a motor, a motor shaft, and fan ro tors mounted coaxially-onsaid shaft at opposite ends of the motor, said-blower being disposed inone of said compartments with the blower axis extending longitudinallyof said compartment.

2. In an air conditioner; an upright casing of sufficiently shallowdepth to be accommodated in a cavity in a wall of an ordinary dwellinghouse, said casing having a vertical air passageway defined between,vertical walls of said casing disposed intermediate the top and bottomof the easing and occupying substantially all of the space from front torear of said casing, and having upper and lower horizontal compartmentsextending from end to end of the casing and disposed respectively aboveand below said passageway, a heat transfer element substantially fillingsaid passageway from front to rear thereof said element including acentral core and spaced vanes extending laterally therefrom in verticalplanes, the edges of said vanes cooperating with said vertical walls toform therewith a plurality of air passages extending vertically from oneof said compartments to the other, the casing having intake anddischarge openings communicating respectively with said compartments,and a blower of an elongated, centrifugal type, disposed in one of saidcompartments with the blower axis extending longitudinally of saidcompartment.

3 In an air conditioner, an upright casing of sufficiently shallow depthto be accommodated in a cavity in a wall of an ordinary dwelling house,said casing having a vertical air passageway disposed intermediate thetop and bottom of the casing and occupying substantially all of thespace from front to rear of said casing, and having upper and lowerhorizontal compartments extendingfrom end to end of the casing anddisposed respectively above and below said passageway, a heat transferelement substantially filling said passageway from front to rear thereofand constructed to provide a plurality of air passages extendingvertically unbrokenly from one of said compartments to the other, thecasing having intake and discharge openings communicating respectivelywith said compartments, and a blower of an elongated, centrifugal type,disposed in one of said compartments with the blower axis extendinglongitudinally of said compartment, the rear wall terminating in aninclined deflector wall communicating with said discharge opening fordeflecting the air stream horizontally therethrough.

4. In an air conditioner, an upright casing pro vided intermediate itstop and bottom with a vertically extending air passage, a blower in aspace below said air passage to direct a stream upwardly therethrough, aheat transfer unit in said air passage for contact with the air passingupwardly therethrough, the upper region of the rear wall of the casingbeing inclined upwardly and forwardly and thence inclined horizontallyforwardly, the casing being provided with an intake grille communicatingwith the blower compartment and with an outlet grille projectingdownwardly from the forward extremity of the top wall of the casing, andan upwardly projecting baiile plate forming a continuation of theforward wall of said air passage, and positioned in a plane spacedrearwardly from said discharge grille and rearwardly from the forwardedge of the upper wall of the casing.

5. In an air conditioner, an upright casing provided intermediate itstop and bottom with a vertically extending air'passage, a blower in aspace below said airpassage to direct a stream upwardly therethrough, aheat transfer unit in said air passage for contact with the air passingupwardly therethrough, the upper region of the rear wall of the casingbeing inclined upwardly and forwardly and thence inclined horizontallyforwardly, the casing being provided with an intake grille communicatingwith the blower compartment and with an outlet grille projectingdownwardly from the forward extremity of the top wall of the casing, theforward wall of said air passagebeing positioned in a plane spacedrearwardly from said discharge grille, and the upper edge of the forwardwall of the discharge passage being positioned at such a distance fromthe top wall of the casing as to cause the air stream to impinge againstsaid inclined wall portion and top wall so as to be reflecteddownwardly.

6. In an air conditioner, an upright casing provided intermediate itstop and bottom with a vertically extending air passage, a blower in aspace below said air passage to direct a stream upwardly therethrough, aheat transfer unit in said air passage for contact with the air passingupwardly therethrough, the casing being provided with an intake openingcommunicatingwith the blower compartment and with an outlet grilleprojecting downwardly from the forward extremity of the top wall of thecasing, and a baflie plate projecting upwardly behind said grille,forming a continuation of the forward wall of said air passage, andpositioned in a plane spaced rearwardly from said discharge grille andrearwardly from the forward edge of the upper wall of the casing.

' WALTER L. MACK.

